Measured Mass Transfer Coefficients in Porous Media Using Specific Interfacial Area

2005 ◽  
Vol 39 (20) ◽  
pp. 7883-7888 ◽  
Author(s):  
Jaehyun Cho ◽  
Michael D. Annable ◽  
P. Suresh C. Rao
Keyword(s):  
Mass Transfer ◽  
Porous Media ◽  
Interfacial Area ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Specific Interfacial Area ◽  
Measured Mass

Effect of surfactants on mass transfer coefficients in bubble column contactors: an interpretative critical review study

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Sahand Nekoeian ◽  
Masoud Aghajani ◽  
Seyed Mehdi Alavi ◽  
Fatemeh Sotoudeh
Keyword(s):  
Mass Transfer ◽  
Bubble Column ◽  
Interfacial Area ◽  
Positive Influence ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Future Studies ◽  
Specific Interfacial Area ◽  
Transfer Operation ◽  
Review Study

Abstract Since surfactants have been recognized as the most frequently faced contaminants of bubble column-related processes over time, their impact on the mass transfer operation of these columns has become a demanding research interest for two recent decades. Despite the similarities expressing the overall negative and positive influence of these chemicals on mass transfer coefficients and specific interfacial area, respectively, the discrepancies and, sometimes, paradoxical results are still under debate in the literature. To make a more comprehensive recognition of the mentioned subject, the current paper has tried to pave the path by reviewing all the major methods utilized in related research works. Thereafter, an interpretative argumentative comparison of the main findings of relevant studies has also been proposed, enlightening some of the research gaps which can be the potential candidates for future studies.

Interfacial area and mass transfer coefficients in liquid-gas ejectors

2011 ◽  
Vol 45 (6) ◽  
pp. 818-823 ◽  
Author(s):  
A. Arunagiri ◽  
I. Regupathi ◽  
T. Murugesan
Keyword(s):  
Mass Transfer ◽  
Interfacial Area ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients

Interfacial area and liquid-side and overall mass transfer coefficients in a three-phase circulating fluidized bed

2013 ◽  
Vol 100 ◽  
pp. 203-211 ◽  
Author(s):  
Jung Suk Lee ◽  
Hae Ryong Jin ◽  
Ho Lim ◽  
Dae Ho Lim ◽  
Yong Kang ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Interfacial Area ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Three Phase

Liquid-liquid mass transfer studies in various stirred vessel designs

2015 ◽  
Vol 31 (4) ◽  
Author(s):  
Reza Afshar Ghotli ◽  
Abdul Raman Abdul Aziz ◽  
Shaliza Ibrahim
Keyword(s):  
Mass Transfer ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Interfacial Area ◽  
Operating Conditions ◽  
Experimental Results ◽  
Dispersed Phase ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Wide Range

AbstractA general review on correlations to evaluate mass transfer coefficients in liquid-liquid was conducted in this work. The mass transfer models can be classified into continuous and dispersed phase coefficients. The effects of drop size and interfacial area on mass transfer coefficient were investigated briefly. Published experimental results for both continuous and dispersed phase mass transfer coefficients through different hydrodynamic conditions were considered and the results were compared. The suitability and drawbacks of these correlations depend on the operating conditions and hydrodynamics. Although the results of these models are reasonably acceptable, they could not properly predict the experimental results over a wide range of designs and operating conditions. Therefore, proper understanding of various factors affecting mass transfer coefficient needs to be further extended.

Influence of liquid properties on mass transfer coefficients in bubble columns

1988 ◽  
Vol 53 (4) ◽  
pp. 763-770 ◽  
Author(s):  
Kurt Winkler ◽  
František Kaštánek ◽  
Jan Kratochvíl
Keyword(s):  
Mass Transfer ◽  
Gas Phase ◽  
Binary Systems ◽  
Bubble Column ◽  
Surface Force ◽  
Interfacial Area ◽  
Bubble Columns ◽  
Transfer Coefficients ◽  
Phase Velocities ◽  
Specific Interfacial Area

The gas phase holdup, the specific interfacial area a, and the liquid-side volumetric mass transfer coefficient kLa have been determined for two selected binary systems water-butanol and butanol-2-ethylhexanol in a short bubble column of 150 mm i.d. at gas phase velocities (air) in the range of uG = (0.31-2.52) . 10-2 m s-1. The kLa-uG dependences show characteristic maxima which only partially can be explained by molecular and surface force interactions, induced by the liquid phase. The main parameter, influencing the kLa-values, is a. At small gas velocities some irregularities in the Sauter diameter d32 and in the values of separated kL are observed.

The transfer of alkanoic acids from dodecane to water

1981 ◽  
Vol 59 (7) ◽  
pp. 1096-1100 ◽  
Author(s):  
Norman H. Sagert ◽  
Michael J. Quinn ◽  
Robert S. Dixon
Keyword(s):  
Mass Transfer ◽  
Temperature Dependence ◽  
Interfacial Area ◽  
Small Range ◽  
Diffusion Cell ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Alkanoic Acids ◽  
Interfacial Transfer ◽  
Alkane Chain

A rotating diffusion cell was used to study the transfer of five alkanoic acids from dodecane to water under conditions of known interfacial area and hydrodynamics. The acids studied were acetic, butanoic, hexanoic, 2-methylbutanoic and 2,2-dimethyl-propanoic acids. Small interfacial resistances to mass transfer were noted, the mass transfer coefficients for interfacial transfer being in the range 2.6 to 4.7 μm/s at 25 °C. This small range means that the effects of the length and structure of the alkane chain on the resistance to mass transfer are minimal. A study of the temperature dependence of the resistance to mass transfer at the interface showed that the resistance is largely entropic rather than enthalpic.

Sign in / Sign up

Export Citation Format

Share Document